Improvement in fan-blowers



larme Strate@ lw. Kunnrnck, or NEW YonK, N. Y.

HWPROVEIWENT IIN FANMBLOERS.

Specification forming part of Letters Patent No. llli, dated December 5,1865.

To' all whom 'it may concern.-

Be itknown that I, WASHINGTON KENDRicK, of the city, county, and Stateof New York, have invented a new and useful Improvement in Fan-Blowers;and I do hereby declare that the following isa full, clear, and exactdescription ofthe same, which will enable those skilled in the art tomake and use the same,

r reference being had to the accompanying d rawings, forming part ofthis specitication, in which-- Figure 1 represents a vertical sectionot' a falrblower constructed according to my invention, the plan ofsection being taken transversely-to the blower-shaft. Fig. 2 is asectional end View ofthe same. Fig. 3 is a side elevation.

Similar letters ot' reference in the three views indicate correspondingparts.

This invention relates to a fan-blower in which the air is taken on theperiphery and discharged on the periphery, in contradistinction to theordinary fan-blower,in which the air is taken in the center anddischarged on the periphery.

" The improvement relates, also, to the form and construction ot' thecase and of the fans, the case heilig made with au aunularcylindricalchannel extending all round its periphery, and with a contraction whichoccupies the space between the annular channel and the ccntral part ot'said case, and the wings being constructed in such a shape that they fitthe annular cylindrical space and the contraction, and all the airadmitted to the case is forced ont.. The supply and discharge openingsare situated at right angles toward each other, and the spider, whichforms the bearing for the outer end ofthe blower-shaft beyond thepulley,which serres to impart motion to the blower, is provided withslots, so that itis adjustable according to the direction in which thedriving-belt runs. Y

V Jkrepresents thecaseot' my fan-blower,which is provided with asupply-opening, a, and a dischargefopening, b, both beingtangential tosaid case, so that the air is taken on the periphery and discharged onthe periphery.. .these openings communicate with an annular cylindricalchannel, o, which extends all round the case, as shown in Figsl and 3.'Ehe transverse section of this channel may be circular,

as shown, or it maybemade elliptical, or in any other desirable form orshape, although the circular form is the most convenient in practice.The space inside this annular channel is occupied by a contraction, d,giving the case a form, as shown particularly in Fig. 2, and the fans cof the'blowerB are made to t the interior of the case, so that all theair, or nearly so, admitted thereto is also forced out, very littlebeing allowed to leak past the fans. The blower is mounted on a shaft,G, which hasits bearings in two spiders, D D', secured. to the outsideof the case,and to whichmotion is imparted by a belt ruiming over apulley, f, which is keyed on the shaft between one of the spiders, D',and the case, as shown in Fig. 2. In order to bring the arms in such aposition that they donot interfere with the belt running over the pulleyf, l have made said spider adj ust-able by means of slots g, throughwhich the screws h pass, which secure the same to the side ofthe case;or.,',instead of these slots, any other suitable means might beeinployed to obtain the desired object. ln some localities thedrivingbelt runs up in aperpendieular line, and in others out on one oron the other side of the ease in different inclinations, and by makingthe spider adjustable I am able to accommodate its arms under allcircumstances to the direction of the belt, so that they do notinterfere with each other.

The great advantage of my fan-blower is derived from the manner in whichit takes and discharges the air. The air on passing into thc case at'theperiphery is propelled by each fan as the same passes thesupply-opening, and,

being prevented by thc centrifugal force from passing toward the centerof the case, it (the air) is driven out through the discharge-open ing,and very little, it' any, air beyond that due to the atmosphericpressure is carried round by the fans between the discharge and supplyopenings or through the arc j, Fig. l.

For these reasons my fan works by compara-l tively little power, and itgives a powerful snctiou, as well as a powerful blast. lt must beremarked that the fans ot' my blower can be cast on or with or otherwiseattached to the shaft `or to their arms.,

lt will be perceived that this apparatus, as`

herein presented, is not applicable to the flow ot' liquids, inasmuch aswith them a current near the periphery cannot be maintained wit-l1- outthe use of gates and guards not requisite in an apparatus adapted to theflow of air.

What I claim as new, and desireE to secure by Letters Patent, is-

A fan-blower in which the air is taken on the peripheryanddischarged onthe periphery, the two parts being,` at right angles to the peripheryand to each other, substantially in the manner, and for the purposes setforth. i

2. Asoombined and arranged therewith, the

@meer case A, with an annular cylindrical channel, c, and contraction d,in combination with fans e, which t the shape of the case and fill theannular channel and the contraction,substan-` W. KENDRIUK.

Witnesses:

W. HAUFF, l E. KASTENHUBER.

